"""
The DoInterestManager keeps track of which parent/zones that we currently
have interest in. When you want to "look" into a zone you add an interest
to that zone. When you want to get rid of, or ignore, the objects in that
zone, remove interest in that zone.
p.s. A great deal of this code is just code moved from ClientRepository.py.
"""
from panda3d.core import *
from panda3d.direct import *
from .MsgTypes import *
from direct.showbase.PythonUtil import *
from direct.showbase import DirectObject
from direct.showbase.MessengerGlobal import messenger
from .PyDatagram import PyDatagram
from direct.directnotify.DirectNotifyGlobal import directNotify
import types
from direct.showbase.PythonUtil import report
[docs]class InterestState:
StateActive = 'Active'
StatePendingDel = 'PendingDel'
[docs] def __init__(self, desc, state, context, event, parentId, zoneIdList,
eventCounter, auto=False):
self.desc = desc
self.state = state
self.context = context
# We must be ready to keep track of multiple events. If somebody
# requested an interest to be removed and we get a second request
# for removal of the same interest before we get a response for the
# first interest removal, we now have two parts of the codebase
# waiting for a response on the removal of a single interest.
self.events = []
self.eventCounter = eventCounter
if event:
self.addEvent(event)
self.parentId = parentId
self.zoneIdList = zoneIdList
self.auto = auto
[docs] def addEvent(self, event):
self.events.append(event)
self.eventCounter.num += 1
[docs] def getEvents(self):
return list(self.events)
[docs] def clearEvents(self):
self.eventCounter.num -= len(self.events)
assert self.eventCounter.num >= 0
self.events = []
[docs] def sendEvents(self):
for event in self.events:
messenger.send(event)
self.clearEvents()
[docs] def setDesc(self, desc):
self.desc = desc
[docs] def isPendingDelete(self):
return self.state == InterestState.StatePendingDel
def __repr__(self):
return 'InterestState(desc=%s, state=%s, context=%s, event=%s, parentId=%s, zoneIdList=%s)' % (
self.desc, self.state, self.context, self.events, self.parentId, self.zoneIdList)
[docs]class InterestHandle:
"""This class helps to ensure that valid handles get passed in to DoInterestManager funcs"""
[docs] def __init__(self, id):
self._id = id
[docs] def asInt(self):
return self._id
def __eq__(self, other):
if type(self) == type(other):
return self._id == other._id
return self._id == other
def __repr__(self):
return '%s(%s)' % (self.__class__.__name__, self._id)
# context value for interest changes that have no complete event
NO_CONTEXT = 0
[docs]class DoInterestManager(DirectObject.DirectObject):
"""
Top level Interest Manager
"""
notify = directNotify.newCategory("DoInterestManager")
InterestDebug = ConfigVariableBool('interest-debug', False)
# 'handle' is a number that represents a single interest set that the
# client has requested; the interest set may be modified
_HandleSerialNum = 0
# high bit is reserved for server interests
_HandleMask = 0x7FFF
# 'context' refers to a single request to change an interest set
_ContextIdSerialNum = 100
_ContextIdMask = 0x3FFFFFFF # avoid making Python create a long
_interests = {}
if __debug__:
_debug_interestHistory = []
_debug_maxDescriptionLen = 40
_SerialGen = SerialNumGen()
_SerialNum = serialNum()
[docs] def __init__(self):
assert DoInterestManager.notify.debugCall()
DirectObject.DirectObject.__init__(self)
self._addInterestEvent = uniqueName('DoInterestManager-Add')
self._removeInterestEvent = uniqueName('DoInterestManager-Remove')
self._noNewInterests = False
self._completeDelayedCallback = None
# keep track of request contexts that have not completed
self._completeEventCount = ScratchPad(num=0)
self._allInterestsCompleteCallbacks = []
def __verbose(self):
return self.InterestDebug.getValue() or self.getVerbose()
def _getAnonymousEvent(self, desc):
return 'anonymous-%s-%s' % (desc, DoInterestManager._SerialGen.next())
[docs] def setNoNewInterests(self, flag):
self._noNewInterests = flag
[docs] def noNewInterests(self):
return self._noNewInterests
[docs] def setAllInterestsCompleteCallback(self, callback):
if ((self._completeEventCount.num == 0) and
(self._completeDelayedCallback is None)):
callback()
else:
self._allInterestsCompleteCallbacks.append(callback)
[docs] def getAllInterestsCompleteEvent(self):
return 'allInterestsComplete-%s' % DoInterestManager._SerialNum
[docs] def resetInterestStateForConnectionLoss(self):
DoInterestManager._interests.clear()
self._completeEventCount = ScratchPad(num=0)
if __debug__:
self._addDebugInterestHistory("RESET", "", 0, 0, 0, [])
[docs] def isValidInterestHandle(self, handle):
# pass in a handle (or anything else) and this will return true if it is
# still a valid interest handle
if not isinstance(handle, InterestHandle):
return False
return handle.asInt() in DoInterestManager._interests
[docs] def updateInterestDescription(self, handle, desc):
iState = DoInterestManager._interests.get(handle.asInt())
if iState:
iState.setDesc(desc)
[docs] def addInterest(self, parentId, zoneIdList, description, event=None):
"""
Look into a (set of) zone(s).
"""
assert DoInterestManager.notify.debugCall()
handle = self._getNextHandle()
# print 'base.cr.addInterest(',description,',',handle,'):',base.clock.getFrameCount()
if self._noNewInterests:
DoInterestManager.notify.warning(
"addInterest: addingInterests on delete: %s" % (handle))
return
# make sure we've got parenting rules set in the DC
if parentId not in (self.getGameDoId(),):
parent = self.getDo(parentId)
if not parent:
DoInterestManager.notify.error(
'addInterest: attempting to add interest under unknown object %s' % parentId)
else:
if not parent.hasParentingRules():
DoInterestManager.notify.error(
'addInterest: no setParentingRules defined in the DC for object %s (%s)'
'' % (parentId, parent.__class__.__name__))
if event:
contextId = self._getNextContextId()
else:
contextId = 0
# event = self._getAnonymousEvent('addInterest')
DoInterestManager._interests[handle] = InterestState(
description, InterestState.StateActive, contextId, event, parentId, zoneIdList, self._completeEventCount)
if self.__verbose():
print('CR::INTEREST.addInterest(handle=%s, parentId=%s, zoneIdList=%s, description=%s, event=%s)' % (
handle, parentId, zoneIdList, description, event))
self._sendAddInterest(handle, contextId, parentId, zoneIdList, description)
if event:
messenger.send(self._getAddInterestEvent(), [event])
assert self.printInterestsIfDebug()
return InterestHandle(handle)
[docs] def addAutoInterest(self, parentId, zoneIdList, description):
"""
Look into a (set of) zone(s).
"""
assert DoInterestManager.notify.debugCall()
handle = self._getNextHandle()
if self._noNewInterests:
DoInterestManager.notify.warning(
"addInterest: addingInterests on delete: %s" % (handle))
return
# make sure we've got parenting rules set in the DC
if parentId not in (self.getGameDoId(),):
parent = self.getDo(parentId)
if not parent:
DoInterestManager.notify.error(
'addInterest: attempting to add interest under unknown object %s' % parentId)
else:
if not parent.hasParentingRules():
DoInterestManager.notify.error(
'addInterest: no setParentingRules defined in the DC for object %s (%s)'
'' % (parentId, parent.__class__.__name__))
DoInterestManager._interests[handle] = InterestState(
description, InterestState.StateActive, 0, None, parentId, zoneIdList, self._completeEventCount, True)
if self.__verbose():
print('CR::INTEREST.addInterest(handle=%s, parentId=%s, zoneIdList=%s, description=%s)' % (
handle, parentId, zoneIdList, description))
assert self.printInterestsIfDebug()
return InterestHandle(handle)
[docs] def removeInterest(self, handle, event = None):
"""
Stop looking in a (set of) zone(s)
"""
# print 'base.cr.removeInterest(',handle,'):',base.clock.getFrameCount()
assert DoInterestManager.notify.debugCall()
assert isinstance(handle, InterestHandle)
existed = False
if not event:
event = self._getAnonymousEvent('removeInterest')
handle = handle.asInt()
if handle in DoInterestManager._interests:
existed = True
intState = DoInterestManager._interests[handle]
if event:
messenger.send(self._getRemoveInterestEvent(),
[event, intState.parentId, intState.zoneIdList])
if intState.isPendingDelete():
self.notify.warning(
'removeInterest: interest %s already pending removal' %
handle)
# this interest is already pending delete, so let's just tack this
# callback onto the list
if event is not None:
intState.addEvent(event)
else:
if len(intState.events) > 0:
# we're not pending a removal, but we have outstanding events?
# probably we are waiting for an add/alter complete.
# should we send those events now?
assert self.notify.warning('removeInterest: abandoning events: %s' %
intState.events)
intState.clearEvents()
intState.state = InterestState.StatePendingDel
contextId = self._getNextContextId()
intState.context = contextId
if event:
intState.addEvent(event)
self._sendRemoveInterest(handle, contextId)
if not event:
self._considerRemoveInterest(handle)
if self.__verbose():
print('CR::INTEREST.removeInterest(handle=%s, event=%s)' % (
handle, event))
else:
DoInterestManager.notify.warning(
"removeInterest: handle not found: %s" % (handle))
assert self.printInterestsIfDebug()
return existed
[docs] def removeAutoInterest(self, handle):
"""
Stop looking in a (set of) zone(s)
"""
assert DoInterestManager.notify.debugCall()
assert isinstance(handle, InterestHandle)
existed = False
handle = handle.asInt()
if handle in DoInterestManager._interests:
existed = True
intState = DoInterestManager._interests[handle]
if intState.isPendingDelete():
self.notify.warning(
'removeInterest: interest %s already pending removal' %
handle)
# this interest is already pending delete, so let's just tack this
# callback onto the list
else:
if len(intState.events) > 0:
# we're not pending a removal, but we have outstanding events?
# probably we are waiting for an add/alter complete.
# should we send those events now?
self.notify.warning('removeInterest: abandoning events: %s' %
intState.events)
intState.clearEvents()
intState.state = InterestState.StatePendingDel
self._considerRemoveInterest(handle)
if self.__verbose():
print('CR::INTEREST.removeAutoInterest(handle=%s)' % (handle))
else:
DoInterestManager.notify.warning(
"removeInterest: handle not found: %s" % (handle))
assert self.printInterestsIfDebug()
return existed
[docs] @report(types = ['args'], dConfigParam = 'guildmgr')
def removeAIInterest(self, handle):
"""
handle is NOT an InterestHandle. It's just a bare integer representing an
AI opened interest. We're making the client close down this interest since
the AI has trouble removing interests(that its opened) when the avatar goes
offline. See GuildManager(UD) for how it's being used.
"""
self._sendRemoveAIInterest(handle)
[docs] def alterInterest(self, handle, parentId, zoneIdList, description=None,
event=None):
"""
Removes old interests and adds new interests.
Note that when an interest is changed, only the most recent
change's event will be triggered. Previous events are abandoned.
If this is a problem, consider opening multiple interests.
"""
assert DoInterestManager.notify.debugCall()
assert isinstance(handle, InterestHandle)
#assert not self._noNewInterests
handle = handle.asInt()
if self._noNewInterests:
DoInterestManager.notify.warning(
"alterInterest: addingInterests on delete: %s" % (handle))
return
exists = False
if event is None:
event = self._getAnonymousEvent('alterInterest')
if handle in DoInterestManager._interests:
if description is not None:
DoInterestManager._interests[handle].desc = description
else:
description = DoInterestManager._interests[handle].desc
# are we overriding an existing change?
if DoInterestManager._interests[handle].context != NO_CONTEXT:
DoInterestManager._interests[handle].clearEvents()
contextId = self._getNextContextId()
DoInterestManager._interests[handle].context = contextId
DoInterestManager._interests[handle].parentId = parentId
DoInterestManager._interests[handle].zoneIdList = zoneIdList
DoInterestManager._interests[handle].addEvent(event)
if self.__verbose():
print('CR::INTEREST.alterInterest(handle=%s, parentId=%s, zoneIdList=%s, description=%s, event=%s)' % (
handle, parentId, zoneIdList, description, event))
self._sendAddInterest(handle, contextId, parentId, zoneIdList, description, action='modify')
exists = True
assert self.printInterestsIfDebug()
else:
DoInterestManager.notify.warning(
"alterInterest: handle not found: %s" % (handle))
return exists
[docs] def openAutoInterests(self, obj):
if hasattr(obj, '_autoInterestHandle'):
# must be multiple inheritance
self.notify.debug('openAutoInterests(%s): interests already open' % obj.__class__.__name__)
return
autoInterests = obj.getAutoInterests()
obj._autoInterestHandle = None
if len(autoInterests) == 0:
return
obj._autoInterestHandle = self.addAutoInterest(obj.doId, autoInterests, '%s-autoInterest' % obj.__class__.__name__)
[docs] def closeAutoInterests(self, obj):
if not hasattr(obj, '_autoInterestHandle'):
# must be multiple inheritance
self.notify.debug('closeAutoInterests(%s): interests already closed' % obj)
return
if obj._autoInterestHandle is not None:
self.removeAutoInterest(obj._autoInterestHandle)
del obj._autoInterestHandle
# events for InterestWatcher
def _getAddInterestEvent(self):
return self._addInterestEvent
def _getRemoveInterestEvent(self):
return self._removeInterestEvent
def _getInterestState(self, handle):
return DoInterestManager._interests[handle]
def _getNextHandle(self):
handle = DoInterestManager._HandleSerialNum
while True:
handle = (handle + 1) & DoInterestManager._HandleMask
# skip handles that are already in use
if handle not in DoInterestManager._interests:
break
DoInterestManager.notify.warning(
'interest %s already in use' % handle)
DoInterestManager._HandleSerialNum = handle
return DoInterestManager._HandleSerialNum
def _getNextContextId(self):
contextId = DoInterestManager._ContextIdSerialNum
while True:
contextId = (contextId + 1) & DoInterestManager._ContextIdMask
# skip over the 'no context' id
if contextId != NO_CONTEXT:
break
DoInterestManager._ContextIdSerialNum = contextId
return DoInterestManager._ContextIdSerialNum
def _considerRemoveInterest(self, handle):
"""
Consider whether we should cull the interest set.
"""
assert DoInterestManager.notify.debugCall()
if handle in DoInterestManager._interests:
if DoInterestManager._interests[handle].isPendingDelete():
# make sure there is no pending event for this interest
if DoInterestManager._interests[handle].context == NO_CONTEXT:
assert len(DoInterestManager._interests[handle].events) == 0
del DoInterestManager._interests[handle]
if __debug__:
[docs] def printInterestsIfDebug(self):
if DoInterestManager.notify.getDebug():
self.printInterests()
return 1 # for assert
def _addDebugInterestHistory(self, action, description, handle,
contextId, parentId, zoneIdList):
if description is None:
description = ''
DoInterestManager._debug_interestHistory.append(
(action, description, handle, contextId, parentId, zoneIdList))
DoInterestManager._debug_maxDescriptionLen = max(
DoInterestManager._debug_maxDescriptionLen, len(description))
[docs] def printInterestHistory(self):
print("***************** Interest History *************")
format = '%9s %' + str(DoInterestManager._debug_maxDescriptionLen) + 's %6s %6s %9s %s'
print(format % (
"Action", "Description", "Handle", "Context", "ParentId",
"ZoneIdList"))
for i in DoInterestManager._debug_interestHistory:
print(format % tuple(i))
print("Note: interests with a Context of 0 do not get" \
" done/finished notices.")
[docs] def printInterestSets(self):
print("******************* Interest Sets **************")
format = '%6s %' + str(DoInterestManager._debug_maxDescriptionLen) + 's %11s %11s %8s %8s %8s'
print(format % (
"Handle", "Description",
"ParentId", "ZoneIdList",
"State", "Context",
"Event"))
for id, state in DoInterestManager._interests.items():
if len(state.events) == 0:
event = ''
elif len(state.events) == 1:
event = state.events[0]
else:
event = state.events
print(format % (id, state.desc,
state.parentId, state.zoneIdList,
state.state, state.context,
event))
print("************************************************")
[docs] def printInterests(self):
self.printInterestHistory()
self.printInterestSets()
def _sendAddInterest(self, handle, contextId, parentId, zoneIdList, description,
action=None):
"""
Part of the new otp-server code.
handle is a client-side created number that refers to
a set of interests. The same handle number doesn't
necessarily have any relationship to the same handle
on another client.
"""
assert DoInterestManager.notify.debugCall()
if __debug__:
if isinstance(zoneIdList, list):
zoneIdList.sort()
if action is None:
action = 'add'
self._addDebugInterestHistory(
action, description, handle, contextId, parentId, zoneIdList)
if parentId == 0:
DoInterestManager.notify.error(
'trying to set interest to invalid parent: %s' % parentId)
datagram = PyDatagram()
# Add message type
if isinstance(zoneIdList, list):
vzl = list(zoneIdList)
vzl.sort()
uniqueElements(vzl)
datagram.addUint16(CLIENT_ADD_INTEREST_MULTIPLE)
datagram.addUint32(contextId)
datagram.addUint16(handle)
datagram.addUint32(parentId)
datagram.addUint16(len(vzl))
for zone in vzl:
datagram.addUint32(zone)
else:
datagram.addUint16(CLIENT_ADD_INTEREST)
datagram.addUint32(contextId)
datagram.addUint16(handle)
datagram.addUint32(parentId)
datagram.addUint32(zoneIdList)
self.send(datagram)
def _sendRemoveInterest(self, handle, contextId):
"""
handle is a client-side created number that refers to
a set of interests. The same handle number doesn't
necessarily have any relationship to the same handle
on another client.
"""
assert DoInterestManager.notify.debugCall()
assert handle in DoInterestManager._interests
datagram = PyDatagram()
# Add message type
datagram.addUint16(CLIENT_REMOVE_INTEREST)
datagram.addUint32(contextId)
datagram.addUint16(handle)
self.send(datagram)
if __debug__:
state = DoInterestManager._interests[handle]
self._addDebugInterestHistory(
"remove", state.desc, handle, contextId,
state.parentId, state.zoneIdList)
def _sendRemoveAIInterest(self, handle):
"""
handle is a bare int, NOT an InterestHandle. Use this to
close an AI opened interest.
"""
datagram = PyDatagram()
# Add message type
datagram.addUint16(CLIENT_REMOVE_INTEREST)
datagram.addUint16((1<<15) + handle)
self.send(datagram)
[docs] def cleanupWaitAllInterestsComplete(self):
if self._completeDelayedCallback is not None:
self._completeDelayedCallback.destroy()
self._completeDelayedCallback = None
[docs] def queueAllInterestsCompleteEvent(self, frames=5):
# wait for N frames, if no new interests, send out all-done event
# calling this is OK even if there are no pending interest completes
def checkMoreInterests():
# if there are new interests, cancel this delayed callback, another
# will automatically be scheduled when all interests complete
# print 'checkMoreInterests(',self._completeEventCount.num,'):',base.clock.getFrameCount()
return self._completeEventCount.num > 0
def sendEvent():
messenger.send(self.getAllInterestsCompleteEvent())
for callback in self._allInterestsCompleteCallbacks:
callback()
self._allInterestsCompleteCallbacks = []
self.cleanupWaitAllInterestsComplete()
self._completeDelayedCallback = FrameDelayedCall(
'waitForAllInterestCompletes',
callback=sendEvent,
frames=frames,
cancelFunc=checkMoreInterests)
checkMoreInterests = None
sendEvent = None
[docs] def handleInterestDoneMessage(self, di):
"""
This handles the interest done messages and may dispatch an event
"""
assert DoInterestManager.notify.debugCall()
contextId = di.getUint32()
handle = di.getUint16()
if self.__verbose():
print('CR::INTEREST.interestDone(handle=%s)' % handle)
DoInterestManager.notify.debug(
"handleInterestDoneMessage--> Received handle %s, context %s" % (
handle, contextId))
if handle in DoInterestManager._interests:
eventsToSend = []
# if the context matches, send out the event
if contextId == DoInterestManager._interests[handle].context:
DoInterestManager._interests[handle].context = NO_CONTEXT
# the event handlers may call back into the interest manager. Send out
# the events after we're once again in a stable state.
#DoInterestManager._interests[handle].sendEvents()
eventsToSend = list(DoInterestManager._interests[handle].getEvents())
DoInterestManager._interests[handle].clearEvents()
else:
DoInterestManager.notify.debug(
"handleInterestDoneMessage--> handle: %s: Expecting context %s, got %s" % (
handle, DoInterestManager._interests[handle].context, contextId))
if __debug__:
state = DoInterestManager._interests[handle]
self._addDebugInterestHistory(
"finished", state.desc, handle, contextId, state.parentId,
state.zoneIdList)
self._considerRemoveInterest(handle)
for event in eventsToSend:
messenger.send(event)
else:
DoInterestManager.notify.warning(
"handleInterestDoneMessage: handle not found: %s" % (handle))
# if there are no more outstanding interest-completes, send out global all-done event
if self._completeEventCount.num == 0:
self.queueAllInterestsCompleteEvent()
assert self.printInterestsIfDebug()
if __debug__:
import unittest
[docs] class AsyncTestCase(unittest.TestCase):
[docs] def setCompleted(self):
self._async_completed = True
[docs] def isCompleted(self):
return getattr(self, '_async_completed', False)
[docs] class AsyncTestSuite(unittest.TestSuite):
pass
[docs] class AsyncTestLoader(unittest.TestLoader):
suiteClass = AsyncTestSuite
[docs] class AsyncTextTestRunner(unittest.TextTestRunner):
[docs] def run(self, testCase):
result = self._makeResult()
startTime = time.time()
test(result)
stopTime = time.time()
timeTaken = stopTime - startTime
result.printErrors()
self.stream.writeln(result.separator2)
run = result.testsRun
self.stream.writeln("Ran %d test%s in %.3fs" %
(run, run != 1 and "s" or "", timeTaken))
self.stream.writeln()
if not result.wasSuccessful():
self.stream.write("FAILED (")
failed, errored = map(len, (result.failures, result.errors))
if failed:
self.stream.write("failures=%d" % failed)
if errored:
if failed:
self.stream.write(", ")
self.stream.write("errors=%d" % errored)
self.stream.writeln(")")
else:
self.stream.writeln("OK")
return result
[docs] class TestInterestAddRemove(AsyncTestCase, DirectObject.DirectObject):
[docs] def testInterestAdd(self):
event = uniqueName('InterestAdd')
self.acceptOnce(event, self.gotInterestAddResponse)
self.handle = base.cr.addInterest(base.cr.GameGlobalsId, 100, 'TestInterest', event=event)
[docs] def gotInterestAddResponse(self):
event = uniqueName('InterestRemove')
self.acceptOnce(event, self.gotInterestRemoveResponse)
base.cr.removeInterest(self.handle, event=event)
[docs] def gotInterestRemoveResponse(self):
self.setCompleted()
[docs] def runTests():
suite = unittest.makeSuite(TestInterestAddRemove)
unittest.AsyncTextTestRunner(verbosity=2).run(suite)
